A. Yu.Odintsov, M. I.Sugak
Numerical and experimental researches of structure of a pulse field in a outputplane of TEM-horn antenna are conducted. On their basis the simplified analytical model is offered, allowing to find a pulse field in a distant zone and to write down expressions for energetic directivity factor. It is shown that the energetic directivity factor has a maximum defined of its electric sizes. The approached formula considering effect desynchronization of a pulse field at edges of TEM-horn antenna is presented.